1995 Plymouth Voyager Wiring Diagram

www.installdr.com is a great site to find some of the factory wire codes for your vehicle. It sounds like your husband might have grounded the aftermarket radio to the lighting wire in the factory wiring. This wire shows a ground until you turn on your headlights when it switched to +12v. In Chrysler vehicles the ground wire is 99% of the time a separate ground wire or braided strap that is attached to the center back of the factory radio. Check to see where the ground is first, if it is in the wrong spot then move it. Next check the vehicle fuses in the fuse panels under the dash and in the engine compartment. Check all the fuses, not just the radio fuse.Top Secret, I can tell you but then my wife will kill me.

He grounded the aftermarket to the braided strap that we removed from the factory stereo. I checked installdr and could only find diagrams for 1996 and above.  But thanks for the link!!!  What about the door locks. Why won't those work now??? Are they connected to the wires for the stereo??????????????